g_timeout_add() - Passing Multiple Parameters!

["JOSE PEDRO SERGIO ROMAO MACHADO" <a15993 alunos det ua pt>]

Hi there,
I'm new at GTK+ and I'm trying to impruve my GTK+ app.

I'm using g_timeout_add() funtion to call a function to 
read an int value from a text file.
I want to put that interger on a widget located in my GUI 
main window.
I using this funtion as:

timer = g_timeout_add(1000, (GtkFunction)ReadTimerFile, 
(gpointer)"database.txt");

Where "database.txt" is the file to be read.

Question: How can I pass more than one argument to my 
ReadTimerFile funtion???

PS: I need to pass and pointer to a widget and the file 
path, ie, (gpointer)"database.txt" and (gpointer)widget.

Thanks in Advance!